: Wednesday, May 14, 2008 11:48 AM
Subject: Re: [MBZ] Fwd: help please: vacuum leak on 240D, 1983
On Wed, May 14, 2008 at 8:44 AM, LWB250 [EMAIL PROTECTED] wrote:
I think this is a recipe for disaster - he's talking about the
compressor?
I didn't interpret it that way. He's talking about
Since it's not shutting down I might suspect the vacuum shut-off
valve. Not
something an amateur (if that's what he is) should change it without
some
direction. Then again it may be the line between the ign sw and the
shutoff
valve. --
I have yet to have a bad shutoff actuator, though
Carb Info http://members.rennlist.com/webercarbs
- Original Message -
From: Jim Cathey [EMAIL PROTECTED]
To: Mercedes Discussion List mercedes@okiebenz.com
Sent: Thursday, May 15, 2008 8:23 AM
Subject: Re: [MBZ] Fwd: help please: vacuum leak on 240D, 1983
Since it's not shutting down I
Can anyone with a W123 300D let me know what connects to each of the two
separate taps on the main vacuum/brake booster line?
I suspect I have some things mis-connected on my car. Not sure if that
would account for my intermittent vacuum losses, but I'd like to have
things set up correctly,
One of them goes to the brake booster, the other goes to a series of 2
or 3 or 4-way connector(s) which goes off to everything else. It
doesn't really matter which hose goes to which connector as long as they
all fit and suck.
On that main 2-way plastic connector, I bodged up something from a
On Thu, May 15, 2008 at 5:23 AM, Jim Cathey [EMAIL PROTECTED] wrote:
I have yet to have a bad shutoff actuator,
I had one crack on the 300D, where the plastic nipple on top meets the
body. I cut off the remainder of the nipple in place with a Dremel
wheel and epoxied on a little styrene tube of
-- Forwarded message --
From: Reid B. Paxton [EMAIL PROTECTED]
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To: [EMAIL PROTECTED]
I guess I have a really bad leak now as the engine won't shut off.
Previously I had to wait a minute for the
I think this is a recipe for disaster - he's talking about the compressor?
Yikes.
Dan
Gary Hurst [EMAIL PROTECTED] wrote:
-- Forwarded message --
From: Reid B. Paxton
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To:
On Wed, May 14, 2008 at 8:44 AM, LWB250 [EMAIL PROTECTED] wrote:
I think this is a recipe for disaster - he's talking about the compressor?
I didn't interpret it that way. He's talking about the vacuum
pump---he's just got its function backwards. Pumping the system up
and listening for leaks
Did you tell him what he needs to do or are you waiting for someone else
to tell him?
--R
Gary Hurst wrote:
-- Forwarded message --
From: Reid B. Paxton [EMAIL PROTECTED]
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To: [EMAIL
: Wednesday, May 14, 2008 9:26 AM
To: Mercedes Discussion List
Subject: [MBZ] Fwd: help please: vacuum leak on 240D, 1983
-- Forwarded message --
From: Reid B. Paxton [EMAIL PROTECTED]
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To: [EMAIL
, May 14, 2008 9:26 AM
To: Mercedes Discussion List
Subject: [MBZ] Fwd: help please: vacuum leak on 240D, 1983
-- Forwarded message --
From: Reid B. Paxton [EMAIL PROTECTED]
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To: [EMAIL
:26 AM
To: Mercedes Discussion List
Subject: [MBZ] Fwd: help please: vacuum leak on 240D, 1983
-- Forwarded message --
From: Reid B. Paxton [EMAIL PROTECTED]
Date: Tue, May 13, 2008 at 7:38 PM
Subject: help please: vacuum leak on 240D, 1983
To: [EMAIL PROTECTED
too would like to have the wisdom of those who have done this
before.
Randy
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Gary Hurst
Sent: Wednesday, May 14, 2008 9:26 AM
To: Mercedes Discussion List
Subject: [MBZ] Fwd: help please: vacuum
Check the plastic part in the main line where the brake booster check
valve is and all the other lines connect. These crack with age, and
leak intermittantly.
Buy a new line, they are something like $45 (at least the one for my
300D was). Fast and easy, and eliminates lots of problems.
every few weeks), I will lose vacuum. Usually first noticed while
driving as a loss of brake boost...Can the vacuum shut-off in the
key switch leak intermittently?
Yes, but there's no way that even a full-open leak in that small
piping can cause the brakes to fail, there is supposed to be
I guess I have a really bad leak now as the engine won't shut off.
Previously I had to wait a minute for the compressor to do its thing.
Anything out there for me to self diagnois, fix this problem?
Visual inspection of vacuum distribution under the hood.
Failing that, get some golf tees (or
Peter Frederick [EMAIL PROTECTED] writes:
Check the plastic part in the main line where the brake booster
check valve is and all the other lines connect. These crack with
age, and leak intermittantly.
Buy a new line, they are something like $45 (at least the one for my
300D was). Fast and
Isn't it a dual system like my 300SD, with half the pump going directly
to the booster, and the other half feeds the rest of the system,
or if necessary, the booster?
Like Jim said, that narrows it down to the booster and the few
components upstream of it, like the pump, check valves, and
Only if it has failed!
You should also verify that the brake booster is good -- they can
fail in such a way that they only leak badly when the brake is
applied -- this will cause the shutoff to not work when you are
stepping on the brake, but fine if you are not.
Peter
On May 14, 2008, at
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